Trail Running calendar near Builth Wells 2026-2027

We have found 275 Trailruns within 80 miles of Builth Wells. See below where and when you can find the races.

Explore the UK's first Area of Outstanding Natural Beauty on the Gower Peninsula. Choose from distances ranging from 10 km to 100 km, with full support and a basecamp at historic Penrice Castle. Options include a competitive run category, a..

UTMB Index

Rabbit Run Wales offers stunning trail races on the private Merthyr Mawr Estate. Runners can choose a 12K route over hills, valleys, and sand dunes, or a 40K tour along the dramatic Glamorgan Heritage Coast.

Event Overview The Welsh 3000 Challenge (14 Peaks) is a guided mountain running and walking event that involves climbing all 15 mountains in Snowdonia, Wales, that are over 3000 feet high in a continuous journey. The total route is about 50..

Tame the Dragon on the Wales Coast Path. Choose from 100, 50, or 30-mile ultramarathons, starting at iconic coastal spots and finishing together at Cardiff Bay. Experience clear trails, golden beaches, and a legendary finale across the barr..

UTMB Index

A multi-distance event on the Wye Valley Greenway featuring a 1.1 km tunnel, flat former-railway trails and family Colourburst fun runs. Routes are waymarked and marshalled with feed stations and on-site facilities.

A scenic trail run in Herefordshire starting from Aymestrey. Choose between a 10-mile route with 1,800 feet of climb or a 5-mile option. The course features lanes, forest tracks, and trails.

Take on the Selworthy Beacon Fell Race on Sun 19 Jul 2026, a punchy 6.2 km with 305 m of climb from Bossington National Trust car park. Pre entry or day entry available for a classic short fell test with stunning coastal views.

Tackle a scenic 10 km trail run at Llys-y-frân Lake, part of the 2026 RTT Series. The route offers varied terrain with beautiful lakeside and woodland views. Runners receive a finisher's medal and chip timing.

Take on the Paddy Buckley Round, a three day guided traverse of Northern Snowdonia's major ranges. The route covers over 100km with 9000m of ascent, visiting 47 summits. You'll be supported by experienced leaders and a vehicle, with the gro..

A marked fell race in South Wales on 23 July 2026, covering 5.5 km with 315 m of climb. Entry on the day costs £3 and the minimum age is 16. Post race tea and cake are available; bring your own mug.

Event Overview The Beacons Way Ultra 100km is a 100-kilometer (62-mile) ultramarathon. It takes place on Saturday, July 25, 2026, across Bannau Brycheiniog, the Brecon Beacons National Park in South Wales. The route follows the official tra..

Event Information The Beacons Way Ultra 100 Mile is a 100-mile ultramarathon with 6143m of total ascent. It takes place in the Brecon Beacons National Park (Bannau Brycheiniog) on Saturday, July 25, 2026. Route and Course The race starts at..

The Railway Ultra follows a disused railway line along the River Severn between Ironbridge and Bridgnorth. Runners can choose from five distances, from 9 miles up to 37 miles. The flat, scenic route features industrial heritage and includes..

Ultra X Wales offers a multi-day trail running weekend in the Brecon Beacons with six distances, from a 12 km run to a challenging 110 km ultra. The event features fully stocked aid stations and is a UTMB Index Race. Runners under 23 can pa..

UTMB Index

Choose your own distance challenge in a 7-hour window at Dare Valley Country Park. Run scenic laps on well-maintained paths, with Britney-themed fun. Everyone finishing 3 km or more gets a themed medal, a goody bag, and ice cream.

Explore the stunning South West Coast Path and Exmoor on this summer trail challenge. Choose from 50km, 25km, or 10km loops starting from a festival basecamp at Dunster Castle. The event welcomes walkers, joggers, and runners with full supp..

UTMB Index

Choose between a 5-mile or 13-mile trail run to the summit of Pen Y Fan, South Wales' highest peak. The entry includes a medal, buff, and chip timing, but participants must carry specific compulsory kit. The event takes place on a Sunday in..

August 2026

The EDDUM is a 50-mile ultra marathon following the Epynt Way trail loop around the Sennybridge Training Area in Wales. With significant elevation gain and fully stocked checkpoints, it offers a demanding trail adventure through an historic..

The MTC Thames Challenge is a four-day, 184-mile ultra marathon along England's longest river path. Participants cover the route in four stages, from the source to the Thames Gate. Accommodation, meals, and kit transfer are included.

Two trail distances along the Mendip Way on 8 August 2026, finishing at Uphill Sands Beach. The routes feature woodlands, hilltop views and coastal terrain with aid stations and a cupless policy.